JPH0353024U - - Google Patents
Info
- Publication number
- JPH0353024U JPH0353024U JP11397489U JP11397489U JPH0353024U JP H0353024 U JPH0353024 U JP H0353024U JP 11397489 U JP11397489 U JP 11397489U JP 11397489 U JP11397489 U JP 11397489U JP H0353024 U JPH0353024 U JP H0353024U
- Authority
- JP
- Japan
- Prior art keywords
- volume
- comparison
- reference voltage
- motor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の一実施例を示す図である。
１……比較ボリユーム、２……基準電圧発生回
路、３……比較回路、３ａ……アツプ増幅、３ｂ
……ダウン増幅、４……スイツチ回路、５……操
作部、６……制御回路、７……モータ駆動回路、
８……モータ、９……音量調整用ボリユーム、１
０……電源スイツチである。
FIG. 1 is a diagram showing an embodiment of the present invention. 1... Comparison volume, 2... Reference voltage generation circuit, 3... Comparison circuit, 3a... Up amplification, 3b
... Down amplification, 4 ... Switch circuit, 5 ... Operation section, 6 ... Control circuit, 7 ... Motor drive circuit,
8...Motor, 9...Volume for volume adjustment, 1
0...Power switch.
Claims (1)
較ボリユームとを同期して駆動するモータ駆動型
ボリユームと、モータ駆動型ボリユームのモータ
をアツプ・ダウン駆動するモータ駆動回路と、モ
ータ駆動回路をアツプ・ダウン指示した操作部の
操作に従つて制御する制御回路と、電源ＯＮ時た
だちにあらかじめ決まつた基準電圧を発生する基
準電圧発生回路と、基準電圧発生回路の基準電圧
と上記比較ボリユームよりの電圧とを比較して基
準電圧に合わせる方向に上記モータ駆動回路に制
御出力を出力する比較回路とを具備し電源ＯＮ時
ただちにあらかじめ決められた基準の音量に音量
調整用ボリユームを自動制御せしめることを特徴
とする音量調整装置。 A motor-driven volume that synchronously drives a volume adjustment volume and a comparison volume that generates a comparison voltage, a motor drive circuit that drives the motor of the motor-driven volume up and down, and a motor drive circuit that instructs the motor drive circuit to go up and down. A control circuit that controls according to the operation of the operating unit, a reference voltage generation circuit that generates a predetermined reference voltage immediately when the power is turned on, and a comparison between the reference voltage of the reference voltage generation circuit and the voltage from the comparison volume. and a comparison circuit that outputs a control output to the motor drive circuit in a direction to match the reference voltage, and automatically controls the volume adjustment volume to a predetermined reference volume immediately when the power is turned on. Adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11397489U JPH0353024U (en) | 1989-09-28 | 1989-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11397489U JPH0353024U (en) | 1989-09-28 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353024U true JPH0353024U (en) | 1991-05-22 |
Family
ID=31662365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11397489U Pending JPH0353024U (en) | 1989-09-28 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353024U (en) |
-
1989
- 1989-09-28 JP JP11397489U patent/JPH0353024U/ja active Pending